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Design 911 Design 911 supply Porsche parts, Porsche spares and Porsche accessories, to both retail and to the trade. Our Porsche product and accessory range includes brakes, exhausts, tyres, wheels and Porsche panels and interiors. https://d911api.datadial.net/images/schemaLogo.png https://d911api.datadial.net/images/schemaLogo.png +443456003478 https://d911api.datadial.net Facebook Instagram
Porsche specialists based in the UK
Porsche > 911 & 912 (1965-1989) > 911 1974-1977 2.7L / 1976-77 3.0 Carrera > Gearbox / Transmission > Transmission Cooling >

Pipes

DISPLAYING 1 to 1 (of 1 products)
915 Gearbox spray bar kit Porsche 915 or 930 transmission
7
915 Gearbox spray bar kit Porsche 915 or 930 transmission
CMS.915.SBK
Product Information
Product Information
Our spray bar, made from stainless steel, is an excellent reproduction of the factory RSR spray bar. It allows for gear lube (presumably from a remote pump and cooler) to be returned directly to the gear mesh, including the final drive gears.

** This requires machining to the front "nose cone" housing.

We have updated our 915 spray bar kit to include an improved oil return port that will not interfere with the torsion bar tube and allows for better routing of the oil return line.
DISPLAYING 1 to 1 (of 1 products)
About Pipes

Porsche Transmission Coolant Pipes - Essential Gearbox Cooling Flow Components

Porsche transmission coolant pipes carry coolant between the gearbox, coolant control valves, and transmission oil coolers, ensuring consistent temperature regulation under all driving conditions. By maintaining correct coolant flow, these pipes protect transmission oil, seals, and internal components from overheating and premature wear.

Available from Design911, transmission coolant pipes are supplied to OEM specifications, making them suitable for maintenance, repairs, and complete cooling system refurbishments.

What Do Porsche Transmission Coolant Pipes Do?

Transmission coolant pipes form the physical flow network of the gearbox cooling system.

Core Functions:

  • Transport coolant to and from the transmission oil cooler
  • Maintain stable gearbox operating temperatures
  • Support efficient transmission oil cooling
  • Prevent thermal stress on internal gearbox components
  • Enable correct operation of coolant control and change over valves

Healthy coolant pipes are essential for reliable transmission thermal management.

Why Do Transmission Coolant Pipes Fail?

Transmission coolant pipes are exposed to heat, pressure, vibration, and environmental conditions.

Common Causes of Failure:

  • Corrosion in metal pipes from age or coolant degradation
  • Cracking or hardening of plastic and rubber sections
  • Heat cycling causing material fatigue
  • Leaks at pipe joints or O-ring connections
  • Physical damage from road debris or incorrect installation

Failure can result in coolant loss, overheating, and transmission damage.

When Should Transmission Coolant Pipes Be Replaced?

Porsche transmission coolant pipes should be inspected and replaced when signs of deterioration appear.

Replacement Indicators:

  • Visible coolant leaks or staining
  • Cracked, swollen, or brittle pipe sections
  • Repeated low coolant warnings
  • Overheating or inconsistent transmission temperatures
  • During transmission or cooling system servicing

Preventative replacement helps avoid sudden coolant loss and expensive gearbox repairs.

Highlights

  • Essential Porsche gearbox cooling system components
  • Maintains reliable coolant flow and temperature control
  • OEM-spec fitment and durability
  • Suitable for road, fast-road, and performance applications
  • Helps prevent overheating and premature gearbox wear       

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